Abstract
We investigate femtosecond laser direct writing (FLDW) in the fabrication of
magneto-optical (MO) microstructures. The experimental results show that FDLW can
introduce positive refractive index change in the MO materials. With the increase of
the writing intensity of femtosecond laser pulses, refractive index change
increases, whereas Verdet constant of the damaged area decreases nonlinearly. With
suitable writing intensity, we obtain a single-mode waveguide in which Verdet
constant is 80% of the bulk MO glass.
© 2012 Chinese Optics Letters
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